ESRTD3. Digital Room Thermostat with TPI & Delayed Start. User and Installation Instructions

Transcription

1 ESRTD3 Digital Room Thermostat with TPI & Delayed Start User and Installation Instructions

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3 INDEX User Instructions What is a Room Thermostat? 1 What is Chronoproportional Control (TPI)? 3 What is Delayed Start? 4 Setting the Temperature 4

4 INDEX Installation Instructions Technical Data 5 Maintenance 6 Installation Safety Instructions 6 Safety Notice 7 Mounting the Thermostat 8 Wiring Diagram 9 DIP Switch Settings - Heating 10 Setting Delayed Start 11

5 User Instructions

6 What is a Room Thermostat?...An explanation for householders A room thermostat simply switches the heating system on and off based on room temperature. It works by sensing the air temperature, switching on the heating when the air temperature falls below the thermostat setting and switching it off once this set temperature has been reached. Turning a room thermostat to a higher setting will not make the room heat up any faster. How quickly the room heats up depends on the design of the heating system, for example, the size of the boiler and radiators. Neither does the setting affect how quickly the room cools down. Turning a room thermostat to a lower setting will result in the room being controlled at a lower temperature, and saves energy. The heating system will not work if a time switch or programmer has switched it off. The house insulation quality is a key factor in heating control. The way to set and use your room thermostat is to find the lowest temperature setting that you are comfortable with, and then leave it alone to do its job. The best way to do this is to set the room thermostat to a low temperature say 18 C and then turn it up until you are comfortable with the temperature (20 C is the usual preferred set point). You won t have to adjust the thermostat further. Any adjustment above this setting will waste energy and cost you more money. If your heating system is a boiler with radiators, there will usually be only one room thermostat to control the whole house (but building regulations Part L require houses above a certain size to have more than 1 heating zone). 1

7 Room thermostats need a free flow of air to sense the temperature, so they must not be covered by curtains or blocked by furniture. Nearby electric fires, televisions, wall or table lamps may prevent the thermostat from working properly. Also keep out of direct sunlight. N.B!! This thermostat has the option of standard setting or TPI. Thermostat Display This product has an internal non-replaceable rechargeable battery to power the display when the system is between heating cycles. To conserve power this will run for up to eight hours and if the heating intervals are more than eight hours apart, the display will go to sleep although the thermostat is still active. When mains power is restored, the battery automatically recharges. This is a design feature to ensure the delayed start thermostat clears its memory at the end of every heating cycle. 2

8 What is Chronoproportional Control (TPI)? A chronoproportional (or TPI) room thermostat makes boilers operate more efficiently and provide close accurate control. Chronoproportional control is a load compensator as it ensures that the boiler ON time is reduced to a minimum and matches the boiler heat output with the heat loss. This reduces the net temperature of the return water to the boiler. This is due to the TPI (Time Proportional and Integral) advanced energy saving feature. Rather than just a simple ON/OFF control, like other domestic room thermostats, room thermostats with TPI increases boiler efficiency by firing the boiler at regular intervals, adjusting firing duration with demand, to maintain set room temperatures, giving them a great advantage over other domestic room thermostats and achieving a constant ambient environment for the user e.g. if a property only has a simple mechanical thermostat installed, then the energy saving benefits of a replacement high efficiency condensing boiler will not be realised as the boiler will rarely be running in condensing mode. Heating and hot water can account for over 80% of total household energy usage. Chronoproportional (TPI) thermostats can provide great cost savings. It can be used on any boiler, with underfloor and radiator systems, zoned heating and electric heating systems. The use of an electronic thermostat with chronoproportional capability provides closer temperature control plus possible reductions of 3

9 10% in both fuel cost and carbon emissions. This thermostat has the option of standard setting or TPI. What is Delayed Start? The ESi Delayed Start function offers real energy savings. Save as much as 10% on your heating costs. This feature delays the start-up of the heating, depending on how warm the room temperature is at the time when the central heating is due to come on. The heating start can be delayed for up to an hour if the room is already relatively warm, when the weather is milder for example. This often reduces how long the heating is on per day, with no comfort loss, saving you energy and money! The delayed start feature can be fully automated and needs no extra programming. Setting the Temperature To set the temperature, turn the dial until the desired temperature is shown in the LCD display. The LCD display will flash the desired temperature for (approximately) 5 seconds before returning to display the current room temperature. 4

10 Installation Instructions

11 Technical Data Digital Room Thermostat with TPI & Delayed Start Power FixingSupply Switch Sensing Action Element Power Supply Switch Action Temperature Setting Range Tolerance Current Rating 230 VAC 50-60Hz Terminal Differential Switch Type Dimensions Dimensions Complies with Easy Fit Back Plate Electronic 230VAC, 50Hz 3(1)A 230VAC 5 o C to 30 o C Maxiumum 3(1)Amp <0.6 o C at 4 o /hour SPST L: 85mm x H: 85mm x D: 35mm EN , EN , EMC Directive 2004/108/EC, LVD Directive 2006/95/EC WARNING: Interference with sealed parts renders the guarentee void. 5

12 Maintenance Always isolate the mains supply before commencing any work, servicing or maintenance on the system. And please read all instructions before proceeding. Arrange for an annual maintenance and inspection schedule to be carried out by a competent person on every part of the heating and hot water system. Installation Safety Instructions The unit must be installed by a suitably qualified person in accordance with the latest IEE Wiring Regulations. Isolate mains supply before commencing installation. Please read all instructions before proceeding. Ensure that the fixed wiring connections to the mains supply is via a fuse rated at not more than 6 amps and class A switch having a contact separation of a minimum of 3mm in all poles. The recommended cable sizes are 1.0mm sqr or 1.5mm sqr. No earth connection is required as the product is double insulated but ensure continuity of earth throughout the system. 6

13 Safety Notice WARNING! ALWAYS ISOLATE THE AC MAINS SUPPLY BEFORE INSTALLING. THIS PRODUCT MUST BE FITTED BY A COMPETENT PERSON, AND INSTALLATION MUST COMPLY WITH THE GUIDANCE PROVIDED IN THE CURRENT EDITIONS OF BS767 (IEE WIRING REGULATIONS) AND PART P OF THE BUILDING REGULA- TIONS. 7

14 Mounting The Thermostat 1. Position the Thermostat about 1.5m above floor level, in a location where the thermostat is accessible, reasonably lit and free from extremes of temperature and draughts. Do not position the thermostat near sources of heat, such as TV, radiators,lights, direct sunlight or on an outside wall. 2. Loosen the screws on the back-plate and remove from the thermostat. 3. Fix the back-plate, terminals at the top, either directly onto a flat wall using wall plugs and screws or on a flush mounting single conduit box. Route the wires through the back of the thermostat and fit the wires to the wall-plate in accordance with the relevant diagram shown overleaf and in accordance with I. E. E. regulations. 4. Select personal options by referring to DIP switch menu (See page 10). 5. Fit the thermostat onto back-plate, and tighten the screws. 6. Ensure an appropriate fuse is fitted to the circuit before reconnecting to the mains supply (3 Amp usually). 8

15 Wiring Diagram NB. 230VAC 3(1) A. This product requires a neutral. 9

16 DIP Switch Settings - Heating COMP DELAY (TPI) OFF DELAYED START OFF COMP DELAY (TPI) ON DELAYED START ON Heating Mode Option to switch to: 1. Chronoproportional (Chrono) 2. 3 or 6 Cycles (Chrono on, only) 3. Delayed Start ON or OFF 10

17 Setting Delayed Start To set Delayed Start ON, switch the Delayed Start switch to the ON position on the DIP switch setting (to the right). To set Delayed Start OFF, switch the Delayed Start switch to the OFF position on the DIP switch setting (to the left). When the system is switched to HEAT and the Delayed Start switch is in the ON position, the thermostat will calculate the delayed start time to switch on the heating according to the difference between the setting temperature and room temperature: - When the room temperature is 6oC or more lower than the setting temperature, the delayed start function will not work. - When the room temperature is 5.9oC lower than the setting temperature, it will have one minute delay. - When the room temperature is 5.8oC lower than the setting temperature, it will have two minutes delay, and so on. - The maximum delay time is 45 minutes. 11

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20 ESi Controls Limited Version 5.4